BOSTON (AP) A family from Louisiana injured when an escalator at a Boston train station malfunctioned has sued the Massachusetts Bay Transportation Authority and a contractor. Karson and Holly Bethay and their two children, of Metairie, Louisiana, suffered “multiple fractures of the upper and lower extremities; extensive facial, scalp, head and body lacerations and other injuries,” when the escalator from the platform up to the street-level lobby at the Back Bay Station malfunctioned at about 6 p.m.